JP2650726B2 - Tool indexing device for turret table by inching - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a tool indexing device for a turret table by inching.

(Prior Art) As an example of a conventional tool indexing device for a turret table by inching, for example, a turret table is started to rotate based on an ON operation of a rotation designation switch, and a predetermined operation is performed after the OFF operation of the switch. The station is detected at a predetermined angle before the stop position and is temporarily stopped after a predetermined time, and then the inching operation is performed by repeatedly driving and stopping in small increments, and the tool position is set by fitting a shot pin in the middle. There is an example of what determines

This device is semi-automatic, and it takes a little time to perform tool indexing work for a fully automatic device. However, the mechanical structure is simple, and it has the advantages of being inexpensive to manufacture. Are widely used in iron material processing apparatuses having a turret table as shown in FIG.

(Problems to be Solved by the Invention) However, in the above-described tool indexing device for a turret table, since a shot pin is fitted while giving an inching operation to the turret table, a tool mounted on the turret table is used. Since the inertia changes due to the difference in the weight of the tool, there is a problem that the number of times of inching changes each time the tool is changed.

Variations in the number of inchings are not only poor in stability due to lack of stability, but also extra inching reduces the working efficiency.

Therefore, an object of the present invention is to provide a tool indexing device for a turret table by inching, which is excellent in stability, looks good, and can improve work efficiency.

[Structure of the Invention] (Means for Solving the Problems) A tool indexing device for a turret table by inching according to the present invention which solves the above problems has a plurality of tool mounting stations S _{1 as} shown in FIG. , S ₂ ..., And a tool indexing device for the turret table 1 for performing an inching operation on a turret table 1 to which an arbitrary tool (not shown) can be mounted at each station Si to perform tool indexing. 1 is provided rotatably,
The rotation driving means M ₁ for rotationally driving the turret table 1 in one direction A is provided, the turret table 1 rotates started based on on-operation of the rotation command switch SW, the switch SW after start of rotation of said turret table the predetermined station Si subjected to processing after the off operation is temporarily stopped from the detection by the detector SL1 at a predetermined angle by the front side from the stop position after the predetermined time T _1, inching operation due to repeated thereafter wiggle the drive and stop Inside the drive control means 25 for detecting the fitting of the shot pin 15 to the hole provided in the turret table by the detector LS2 and stopping the rotation of the turret table, based on the state of the inching operation wherein the next inching is provided with learning means 27 for adjusting longer the predetermined time T ₁ to be more a short time.

(Operation) In the tool indexing device for an inching turret table having the above-described configuration, since the learning means 27 is provided, the inching operation for the second and subsequent times can be performed in a shorter time in the first learning.

(Embodiment) Referring to FIG. 2 and FIG. 3, a turret table 1 of the present embodiment is used for the above-mentioned iron material processing apparatus, is supported on a piston 5 of a cylinder 3, and is provided below the same. and you can rotate the direction a by the gears 7 to the gear 9 meshing motor M ₁ has.

Specifically, the cylinder 3 is connected to a hydraulic pump 13 driven by a motor M ₂ via the solenoid valve 11 to supply pressure oil to the cylinder 3 by energizing the solenoid of the solenoid valve 11, It has a work table 1 to be able to rotate the direction a by driving the motor M ₁ in a state of lifting the work table 1 upward by the piston 5.

As shown in detail in FIG. 3, the work table 1 is provided with a plurality of stations S1, S2,... S6 for mounting tools, and each station can arbitrarily select all types for punching or notching. It can be installed.

On the back of the turret table 1, each station S1 ~
In correspondence with S6, dogs D1 to D6 and holes H1 to H6 for fitting shot pins are provided a predetermined angle before each station position with respect to the rotation direction A. On the other hand, these dogs
It corresponds to D1 to D6 and holes H1 to H6, and on the base side, a limit switch SL1 that detects each dog, and each hole H1 to H6
Shot pins 15 for positioning the stations S1 to S6 corresponding to 1 to H6 to the processing positions are provided at predetermined positions shown in FIG.

More specifically, the shot pin 15 is normally urged upward by a spring 17, and when pressurized oil is supplied to the cylinder 3 by the operation of the solenoid valve 11, the shot pin 15 is pressed downward against the spring 17. And supported by a cylinder device 19 which is detached from the holes H1 to H6. The shot pin 15 is provided with a limit switch L2 for detecting when the shot pin 15 is pulled out of the holes H1 to H6.

As shown in FIG. 4, a control device 21 for controlling the turret table 1 includes a rotation drive control means inside an NC device 23.
25 and learning means 27. The NC device 23 controls the relative movement of a material and a tool (not shown).

The NC device 23, a switch to provide a drive command to the motor M ₁
And SW, and the limit switch LS1, LS2, and a magnet switch MS giving a drive command to the motor M _1, the solenoid SOL for energizing the solenoid valve 11 is connected.

Next, a tool indexing method of the tool indexing device for a turret table by inching having the above-described configuration will be described with reference to FIGS.

In FIG. 6, at step 601, the push button switch S
When the ON signal of W is input, the solenoid of the solenoid valve 11 shown in FIG. 2 is excited through steps 602 and 603,
The pressurized oil is supplied to the cylinder 3, the turret table 1 is raised, and the hole Hi in which the shot pin 15 is currently fitted.
More extracted.

Therefore, by turning on the limit switch LS2 at step 604, actually shot pin 15 to verify that exit from the holes Hi, at step 605, and turns on the magnet switch MS to drive the motor M _1.

The operator can rotate the turret table 1
Is turned on and the push button switch SW is turned off on the short side before the predetermined tool reaches the machining position in FIG.

Then, at step 606, it is confirmed that the push button switch SW is turned off. Then, at step 607, the limit switch LS1 is turned off.
Detects dog Di for a given station,
Set to a predetermined time period T ₁ in step 608, in step 609,
This time T ₁ is measured to be time-up, and step 61 is performed.
0 off magnet switch MS of the motor M _1, as shown in FIG. 5, slowing stop turret table 1.

In step 611, the solenoid SOL is turned off, the turret table 1 is lowered with respect to the base, and the shot pins 15 are urged against the lower surface of the turret table 1.

In step 612, it sets the stop time T ₂ in order to perform the inching operation shown in Figure 5. Next, after this time T ₂ has timed out in step 613, step 6
At 14, the magnet switch MS is turned on to drive the turret table 1 for inching, and then at step 615 a time T ₃ for stopping inching is set.

In step 616, the shot pin 15 until the lapse of driving time T ₃ at step 616 detects whether or not fitted into the predetermined hole Hi, to step 621 Once fitted, the process proceeds to step 618, if still .

In step 618 a magnet switch MS for driving the motor M ₁ is turned off, again stopping time in step 619 T ₂
Is set, the number of times of inching is incremented by 1 in step 620, and the process returns to step 613 again to start the next inching operation.

Thus, while repeating steps 613～ step 620, the shot pin 15 at step 616 it is confirmed that fitted in the hole Hi, now proceeds to step 621, magnet switch MS for the motor M ₁ drives Off and
The positioning of the turret table 1 is completed. With this,
A predetermined tool is determined at the processing position.

Next, in this example, in particular, after step 621, step 6
22 as shown in Figure 5 is interposed, inching number of second and subsequent adjusted longer by a short time (e.g., 2 times) and so as early learning means 27 the drive time T ₁ of the motor M _1.

Therefore, in this example, as shown in FIG. 5 as the first time and the second time, the first time when the tool conversion is performed,
In the second and subsequent inching drives, the number of inchings n can be reduced to shorten the time.

The present invention is not limited to the above-described embodiment, but can be implemented in other appropriate modes by making appropriate design changes.

[Effects of the Invention] As described above, according to the tool indexing apparatus for a turret table by inching of the present invention, since learning means for reducing the number of times of inching is provided, the second and subsequent inching after tool conversion is performed. The number of times can be reduced to shorten the time, the stability is excellent, the indexing of the tool is performed more quickly, and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing an outline of the present invention, FIG. 2 and subsequent figures show an embodiment, FIG. 2 is a side view of a turret table, FIG. 3 is a top view of FIG. FIG. 5 is an explanatory diagram of a turret table operation before and after learning according to a time chart, and FIG. 6 is a flowchart showing an operation method. 1 ...... turret table 15 ...... shot pin 25 ...... driving control unit 27 motor D1 to D6 ...... dog H1 to H6 ...... shots ...... learning means S1 to S6 ...... station M ₁ ...... turret table rotation drive Hole for pin fitting LS1 Limit switch for dog detection LS2 Limit switch for shot pin operation detection

Claims (1)

(57) [Claims] 1. A turret table tool indexing apparatus having a plurality of tool mounting stations, and performing an inching operation on a turret table capable of mounting an arbitrary tool at each station to perform tool indexing, wherein the turret table is rotated. Provided freely, provided with a rotation drive means for driving the turret table to rotate in one direction, to start the rotation of the turret table based on ON operation of a rotation command switch,
A predetermined station to be used for processing after the turning off of the switch after the start of rotation of the turret table is detected at a predetermined angle from the stop position on the near side, and then temporarily stopped after a predetermined time, and thereafter, small-step driving and stopping are repeated. Drive control means for detecting the engagement of the shot pin with the hole provided in the turret table during the inching operation by the above and stopping the rotation of the turret table, and performing the next inching based on the state of the inching operation. A tool indexing apparatus for a turret table by inching, further comprising learning means for adjusting the predetermined time longer so that the operation becomes shorter.